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What is Kernel Patch Protection mean?
Kernel Patch Protection (KPP), informally known as PatchGuard, is a feature of 64-bit (x64) editions of Microsoft Windows that prevents patching the kernel. It was first introduced in 2005 with the x64 editions of Windows XP and Windows Server 2003 Service Pack 1.
"Patching the kernel" refers to unsupported modification of the central component or kernel of the Windows operating system. Such modification has never been supported by Microsoft because, according to Microsoft, it can greatly reduce system security, reliability, and performance. Although Microsoft does not recommend it, it is possible to patch the kernel on x86 editions of Windows; however, with the x64 editions of Windows, Microsoft chose to implement additional protection and technical barriers to kernel patching.
Since patching the kernel is possible in 32-bit (x86) editions of Windows, several antivirus software developers use kernel patching to implement antivirus and other security services. These techniques will not work on computers running x64 editions of Windows. Because of this, Kernel Patch Protection resulted in antivirus makers having to redesign their software without using kernel patching techniques.
However, because of the design of the Windows kernel, Kernel Patch Protection cannot completely prevent kernel patching. This has led to criticism that since KPP is an imperfect defense, the problems caused to antivirus vendors outweigh the benefits because authors of malicious software will simply find ways around its defenses. Nevertheless, Kernel Patch Protection can still prevent problems of system stability, reliability, and performance caused by legitimate software patching the kernel in unsupported ways.
referencePosted on 30 Apr 2022, this text provides information on Miscellaneous in Softwares related to Softwares. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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